FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ld_cac.c
1 /* $NetBSD: ld_cac.c,v 1.8 2002/10/02 16:33:33 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 /*
40 * Compaq array controller front-end for ld(4) driver.
41 */
42
43 #include <sys/cdefs.h>
44 __KERNEL_RCSID(0, "$NetBSD: ld_cac.c,v 1.8 2002/10/02 16:33:33 thorpej Exp $");
45
46 #include "rnd.h"
47
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/kernel.h>
51 #include <sys/device.h>
52 #include <sys/buf.h>
53 #include <sys/endian.h>
54 #include <sys/dkio.h>
55 #include <sys/disk.h>
56 #if NRND > 0
57 #include <sys/rnd.h>
58 #endif
59
60 #include <machine/bus.h>
61
62 #include <dev/ldvar.h>
63
64 #include <dev/ic/cacreg.h>
65 #include <dev/ic/cacvar.h>
66
67 struct ld_cac_softc {
68 struct ld_softc sc_ld;
69 int sc_hwunit;
70 struct timeval sc_serrtm;
71 int sc_serrcnt;
72 };
73
74 void ld_cac_attach(struct device *, struct device *, void *);
75 void ld_cac_done(struct device *, void *, int);
76 int ld_cac_dump(struct ld_softc *, void *, int, int);
77 int ld_cac_match(struct device *, struct cfdata *, void *);
78 int ld_cac_start(struct ld_softc *, struct buf *);
79
80 static const struct timeval ld_cac_serrintvl = { 60, 0 };
81
82 CFATTACH_DECL(ld_cac, sizeof(struct ld_cac_softc),
83 ld_cac_match, ld_cac_attach, NULL, NULL);
84
85 int
86 ld_cac_match(struct device *parent, struct cfdata *match, void *aux)
87 {
88
89 return (1);
90 }
91
92 void
93 ld_cac_attach(struct device *parent, struct device *self, void *aux)
94 {
95 struct cac_drive_info dinfo;
96 struct cac_attach_args *caca;
97 struct ld_softc *ld;
98 struct ld_cac_softc *sc;
99 struct cac_softc *cac;
100 const char *type;
101
102 sc = (struct ld_cac_softc *)self;
103 ld = &sc->sc_ld;
104 caca = (struct cac_attach_args *)aux;
105 sc->sc_hwunit = caca->caca_unit;
106 cac = (struct cac_softc *)parent;
107
108 if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo),
109 sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) {
110 printf("%s: CMD_GET_LOG_DRV_INFO failed\n", self->dv_xname);
111 return;
112 }
113
114 ld->sc_secsize = CAC_GET2(dinfo.secsize);
115 ld->sc_maxxfer = CAC_MAX_XFER;
116 ld->sc_maxqueuecnt = CAC_MAX_CCBS / cac->sc_nunits; /* XXX */
117 ld->sc_secperunit = CAC_GET2(dinfo.ncylinders) *
118 CAC_GET1(dinfo.nheads) * CAC_GET1(dinfo.nsectors);
119 ld->sc_start = ld_cac_start;
120 ld->sc_dump = ld_cac_dump;
121
122 switch (CAC_GET1(dinfo.mirror)) {
123 case 0:
124 type = "standalone disk or RAID0";
125 break;
126 case 1:
127 type = "RAID4";
128 break;
129 case 2:
130 type = "RAID1";
131 break;
132 case 3:
133 type = "RAID5";
134 break;
135 default:
136 type = "unknown type of";
137 break;
138 }
139
140 printf(": %s array\n", type);
141
142 /* XXX We should verify this... */
143 ld->sc_flags = LDF_ENABLED;
144 ldattach(ld);
145 }
146
147 int
148 ld_cac_start(struct ld_softc *ld, struct buf *bp)
149 {
150 int flags, cmd;
151 struct cac_softc *cac;
152 struct ld_cac_softc *sc;
153 struct cac_context cc;
154
155 sc = (struct ld_cac_softc *)ld;
156 cac = (struct cac_softc *)ld->sc_dv.dv_parent;
157
158 cc.cc_handler = ld_cac_done;
159 cc.cc_context = bp;
160 cc.cc_dv = &ld->sc_dv;
161
162 if ((bp->b_flags & B_READ) == 0) {
163 cmd = CAC_CMD_WRITE;
164 flags = CAC_CCB_DATA_OUT;
165 } else {
166 cmd = CAC_CMD_READ;
167 flags = CAC_CCB_DATA_IN;
168 }
169
170 return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit,
171 bp->b_rawblkno, flags, &cc));
172 }
173
174 int
175 ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
176 {
177 struct ld_cac_softc *sc;
178
179 sc = (struct ld_cac_softc *)ld;
180
181 return (cac_cmd((struct cac_softc *)ld->sc_dv.dv_parent,
182 CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize,
183 sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL));
184 }
185
186 void
187 ld_cac_done(struct device *dv, void *context, int error)
188 {
189 struct buf *bp;
190 struct ld_cac_softc *sc;
191
192 bp = context;
193
194 if ((error & CAC_RET_HARD_ERROR) != 0) {
195 printf("%s: hard error\n", dv->dv_xname);
196 error = EIO;
197 }
198 if ((error & CAC_RET_CMD_REJECTED) != 0) {
199 printf("%s: invalid request\n", dv->dv_xname);
200 error = EIO;
201 }
202 if ((error & CAC_RET_SOFT_ERROR) != 0) {
203 sc = (struct ld_cac_softc *)dv;
204 sc->sc_serrcnt++;
205 if (ratecheck(&sc->sc_serrtm, &ld_cac_serrintvl)) {
206 printf("%s: %d soft errors; array may be degraded\n",
207 dv->dv_xname, sc->sc_serrcnt);
208 sc->sc_serrcnt = 0;
209 }
210 error = 0;
211 }
212
213 if (error) {
214 bp->b_flags |= B_ERROR;
215 bp->b_error = error;
216 bp->b_resid = bp->b_bcount;
217 } else
218 bp->b_resid = 0;
219
220 lddone((struct ld_softc *)dv, bp);
221 }
Cache object: 478d01a2609ee413a12f1c612e713779
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